Russian Chemical Bulletin

, Volume 58, Issue 2, pp 297–302 | Cite as

Electrocarboxylation of CCI4 in MeCN during electrolysis with the sacrificial Zn anode

  • V. L. Sigacheva
  • S. V. Neverov
  • V. A. Petrosyan
Full Articles

The regularities of galvanostatic electrocarboxylation of CCl4 in Alk4NBr/MeCN in an undivided cell with sacrificial Zn anode were studied. The major product of the electrolysis is zinc trichloroacetate, which is formed as a result of the reaction of the cathode-generated CCl3- anion with CO2. The further trichloroacetate reduction is prevented by cathode passivation. Therefore, small amounts of zinc dichloro- and monochloroacetates are formed due to the chemical reduction of zinc trichloroacetate with Zn0 rather than the cathodic reduction. Zero-valence zinc is formed in minor amounts when Zn2+ ions are discharged at the cathode surface because of the low solubility of ZnBr2 in MeCN. The treatment of (Cl3CCOO)2Zn with H2SO4 in MeOH gives Cl3CCO2Me in 11% yield based on the starting CCl4.

Key words

electrochemical carboxylation sacrificial zinc anode tetrachloromethane carbon dioxide trichloroacetic acid 


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Copyright information

© Springer Science+Business Media, Inc.  2010

Authors and Affiliations

  • V. L. Sigacheva
    • 1
  • S. V. Neverov
    • 1
  • V. A. Petrosyan
    • 1
  1. 1.N. D. Zelinsky Institute of Organic ChemistryRussian Academy of SciencesMoscowRussian Federation

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